The new type of pneumonia epidemic is fierce. With the full resumption of work in most parts of the country, masks have become a necessity. However, most masks now use melt-blown non-woven fabrics, which rely on the electrostatic force between fibers to protect bacteria and microorganisms. The adsorption of particles achieves protection, but due to factors such as breath moisture, external ultraviolet rays and other factors, static electricity attenuates and the protective effect is lost.
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